通过php和ajax发送带有附件的电子邮件

Question

我的代码有什么问题？

不带附件的电子邮件有效，但带附件的电子邮件无效:(

我尝试了百万选项，但仍然不起作用。我认为标头有问题，无法通过附件发送。

有人可以帮我解决这个问题吗？我已经损失了几个小时，不幸的是我自己无法解决这个问题。

<?php
if($_POST)
{
    $to_email       = "[email protected]";
    $from_email     = "[email protected]";
     
    $subject    = "subject";
    $cnc        = $_POST["cnc_wheels"];
    $pain       = $_POST["new_paint_wheels"];
   
    $message_body = "email data";

    $file_attached = false;
    if(isset($_FILES["font_img_wheels"])) {
        $file_tmp_name    = $_FILES['font_img_wheels']['tmp_name'];
        $file_name        = $_FILES['font_img_wheels']['name'];
        $file_size        = $_FILES['font_img_wheels']['size'];
        $file_type        = $_FILES['font_img_wheels']['type'];
        $file_error       = $_FILES['font_img_wheels']['error'];

        if($file_error>0) {
            $mymsg = array( 
            1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini", 
            2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form", 
            3=>"The uploaded file was only partially uploaded", 
            4=>"No file was uploaded", 
            6=>"Missing a temporary folder" ); 
            
            $output = json_encode(array('type'=>'error', 'text' => $mymsg[$file_error]));
            die($output); 
        }
        
        $handle = fopen($file_tmp_name, "r");
        $content = fread($handle, $file_size);
        fclose($handle);
        $encoded_content = chunk_split(base64_encode($content));
        $file_attached = true;
    }
    
    if($file_attached) {
         # Mail headers should work with most clients
         $headers = "MIME-Version: 1.0\r\n";
         $headers = "X-Mailer: PHP/" . phpversion()."\r\n";
         $headers .= "From: ".$from_email."\r\n";
         $headers .= "Subject: ".$subject."\r\n";
         $headers .= "Reply-To: ".$_POST["email_client"]."" . "\r\n";
         $headers .= "Content-Type: multipart/mixed; boundary=".md5('boundary1')."\r\n\r\n";
         
         $headers .= "--".md5('boundary1')."\r\n";
         $headers .= "Content-Type: multipart/alternative;  boundary=".md5('boundary2')."\r\n\r\n";
         
         $headers .= "--".md5('boundary2')."\r\n";
         $headers .= "Content-Type: text/plain; charset=utf-8\r\n\r\n";
         $headers .= $message_body."\r\n\r\n";
         
         $headers .= "--".md5('boundary2')."--\r\n";
         $headers .= "--".md5('boundary1')."\r\n";
         $headers .= "Content-Type:  ".$file_type."; ";
         $headers .= "name=\"".$file_name."\"\r\n";
         $headers .= "Content-Transfer-Encoding:base64\r\n";
         $headers .= "Content-Disposition:attachment; ";
         $headers .= "filename=\"".$file_name."\"\r\n";
         $headers .= "X-Attachment-Id:".rand(1000,9000)."\r\n\r\n";
         $headers .= $encoded_content."\r\n";
         $headers .= "--".md5('boundary1')."--";
    }else{
        $headers = 'From: '.$_POST["email_client"].'' . "\r\n" .
        'Reply-To: '.$_POST["email_client"].'' . "\r\n" .
        'X-Mailer: PHP/' . phpversion();
    }
   
    $send_mail = mail($to_email, $subject, $message_body, $headers);

    if(!$send_mail) {
        $output = json_encode(array('type'=>'error', 'text' => 'Wiadomość nie została wysłana.'));
        die($output);
    }else {
        $output = json_encode(array('type'=>'message', 'text' => 'Dziękujemy, za zapytanie. Skontaktujemy się niebawem.'));
        die($output);
    }
}

我期待有人可以帮助我。

Answer 1

我对您的

if($file_attached)

块做了一些小调整。我添加了内联评论来描述更改。

if($file_attached) {
    // initialize boundary variables
    $boundary1 = md5('boundary1');
    $boundary2 = md5('boundary2');

    $headers = "MIME-Version: 1.0\r\n";
    $headers .= "X-Mailer: PHP/" . phpversion()."\r\n"; // changed from = to .=
    $headers .= "From: ".$from_email."\r\n";
    $headers .= "Subject: ".$subject."\r\n";
    $headers .= "Reply-To: ".$_POST["email_client"]."\r\n";
    $headers .= "Content-Type: multipart/mixed; boundary=".$boundary1."\r\n\r\n";

    // use the $body variable to construct the email content
    // the attachment will now be included in the body of the email
    $body = "--".$boundary1."\r\n";
    $body .= "Content-Type: multipart/alternative; boundary=".$boundary2."\r\n\r\n";

    $body .= "--".$boundary2."\r\n";
    $body .= "Content-Type: text/plain; charset=utf-8\r\n\r\n";
    $body .= $message_body."\r\n\r\n";

    $body .= "--".$boundary2."--\r\n";
    $body .= "--".$boundary1."\r\n";
    $body .= "Content-Type: ".$file_type."; name=\"".$file_name."\"\r\n";
    $body .= "Content-Transfer-Encoding: base64\r\n";
    $body .= "Content-Disposition: attachment; filename=\"".$file_name."\"\r\n";
    $body .= "X-Attachment-Id:".rand(1000,9000)."\r\n\r\n";
    $body .= $encoded_content."\r\n";
    $body .= "--".$boundary1."--";
    
    // adjusted to match $body and send email within this block
    $send_mail = mail($to_email, $subject, $body, $headers);
}

通过电子邮件发送或接收文件也可能受到限制，具体取决于附件的大小。

如果是这种情况，在您的

php.ini

文件中，您应该调整以下内容以满足您的需求：

• upload_max_filesize

  - 指定上传文件的最大大小。它应该设置为大于您的附件的值

• post_max_size

  - 限制 POST 数据的大小。该值必须大于

  upload_max_filesize

• memory_limit

  - 设置允许脚本分配的最大内存量。它应该大于您正在处理的文件大小